This is odd since I never blew a fuse that I know of or anything like that..

I hooked it up in series that I wanted to measure Anyways the supply voltage is DC and it always reads 0A

So I took out my older meter and checked the same way and i was able to see the current which is 780mA.

Any ideas on what could be wrong?

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You probably blew the fuse & didn't know it. most meters I have used, have 2 current terminals. One fused for 200 or 400mA and the other fused for 10A. So if your meter is fused for low mA and you put 780mA through it then you blew the fuse.